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Camera lens

A camera lens and lens technology, applied in the field of camera lens, can solve the problems of small head and high imaging quality at the same time

Pending Publication Date: 2022-04-15
ZHEJIANG SUNNY OPTICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to provide a camera lens to solve the problem that the camera lens in the prior art has a small head and high imaging quality and it is difficult to take care of it at the same time

Method used

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Experimental program
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Embodiment 1

[0055] Such as Figure 1 to Figure 30 As shown, the camera lens includes a first lens, a second lens, a third lens, a fourth lens and a fifth lens in sequence from the subject side to the imaging side along the optical axis; wherein, the first lens has a positive refractive power, which is The side of the subject is convex, and the imaging side is convex; the second lens has negative power, and its imaging side is concave; the third lens has negative power, and its side of the subject is concave; the fourth lens has positive power , the object side is convex, and the imaging side is convex; the fifth lens has negative power, the object side is convex, and the imaging side is concave; the center thickness of the first lens on the optical axis is CT1, the first The effective radius DT11 of the lens on the object side and the effective radius DT12 of the imaging side of the first lens satisfy: 0.5<CT1 / (DT11+DT12)<2.

[0056] Preferably, 0.7

[0057] By reas...

Embodiment 2

[0071] Such as Figure 1 to Figure 30 As shown, the camera lens includes a first lens, a second lens, a third lens, a fourth lens and a fifth lens in sequence from the subject side to the imaging side along the optical axis; wherein, the first lens has a positive refractive power, which is The side of the subject is convex, and the imaging side is convex; the second lens has negative power, and its imaging side is concave; the third lens has negative power, and its side of the subject is concave; the fourth lens has positive power , the side of the subject is convex, and the side of the imaging is convex; the fifth lens has negative power, the side of the subject is convex, and the side of the imaging is concave; half of the diagonal length of the effective pixel area on the imaging surface ImgH and The effective focal length f of the camera lens satisfies: 0.6<ImgH / f<1.2.

[0072] Preferably, 0.8<1 mgH / f<1.0.

[0073] By reasonably controlling the surface shape of each lens...

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Abstract

The invention provides a camera lens. The pick-up lens sequentially comprises a first lens, a second lens, a third lens, a fourth lens and a fifth lens from a shot object side to an imaging side along an optical axis, wherein the first lens has positive focal power, the shot object side surface of the first lens is a convex surface, and the imaging side surface of the first lens is a convex surface; the second lens has negative focal power, and the imaging side surface of the second lens is a concave surface; the third lens has negative focal power, and the shot object side surface of the third lens is a concave surface; the fourth lens has positive focal power, the shot object side surface of the fourth lens is a convex surface, and the imaging side surface is a convex surface; the fifth lens has negative focal power, the shot object side surface of the fifth lens is a convex surface, and the imaging side surface of the fifth lens is a concave surface; the center thickness CT1 of the first lens on the optical axis, the effective half aperture DT11 of the object side surface of the first lens, and the effective half aperture DT12 of the imaging side surface of the first lens satisfy: 0.5 lt; cT1 / (DT11 + DT12) lt; 2. According to the invention, the problem that a small head and high imaging quality of a camera lens in the prior art are difficult to consider at the same time is solved.

Description

technical field [0001] The present invention relates to the technical field of optical imaging equipment, in particular to a camera lens. Background technique [0002] With the rapid development of science and technology, camera lenses suitable for portable electronic products are changing with each passing day. At present, people have higher and higher requirements on the imaging quality of camera lenses. However, due to the trend of miniaturization of portable electronic products, in order to adapt to thin and light portable electronic products, the requirements for the overall length and head size of the camera lens are becoming more and more stringent, which gradually promotes the development of camera lenses towards miniaturization and light weight. This leads to a reduction in design freedom and increased design difficulty. And with the performance improvement and size reduction of CCD and CMOS image sensors, correspondingly higher requirements are put forward for the...

Claims

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Application Information

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IPC IPC(8): G02B13/00G02B13/18
Inventor 孙叶萍戴付建赵烈烽
Owner ZHEJIANG SUNNY OPTICAL CO LTD